Thank you. CRP is short for C-Reactive Protein and it is elevated if there is an inflammation (which can be viral, bacterial, fungal), but procalcitonin goes up only when there is a bacterial infection (this is an explanation i got from the infectiologist who was called for a consult. These are inexpensive tests and it's a shame no one told me about them because i would've paid out of my own pocket to test him. The oncologist told us that if chemo doesn't lower his WBC we don't have to worry about infection (clearly not true). My dad was 76, very active, still working full time (as he stated-architects never retire!), no diabetes, high blood pressure, cholesterol, nothing! This is why i can't understand how this could've happened...